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4 0 9 1 0 2 T P E s D E T N E T A P n N A EL 3 M B E m 7 3 1 0 7 7 0 NAPPLICATION FILED JAN. 30, 1904.

N0 MODEL.

INVENTOK. Jrmmwc 26 rz/a m c BY f ATTORNEYS .WITNESSES fiaddmly UNITEDSTATES Patented September 20, 1904.

PATENT @FFICE.

BELL.

SPECIFICATION forming part of Letters Patent No. 770,437, datedSeptember 20, 1904.

Application filed January 30, 1904. Serial No. 191,359- (No model.)

To all whom it may concern.-

Be itknown that I, RO LAND H. MAYLAND, a citizen of the United States ofAmerica, and a resident of Freeport, Nassau county, State of New York,have invented Improvements in Bells, of which the following is aspecification.

It is a well-known scientific fact that if the open end of a tube beplaced adjacent to the outer rim of a bell the note given out by thelatter when set in vibration will be materially reinforced by the actionof the column of air in the tube. This action is termed resonance.According to my invention 1 avail myself of this scientific principle toso construct hand-bells and other bells for household and other purposesas to improve the quality of the tone or note given out by the bell andto make the sound more pleasant to the car by reinforcing thefundamental tone or note, and this I accomplish without detracting inany respect from the constructive appearance of the bell itself. Thisobject I attain by constructing the bell with an internal resonator, ashereinafter described.

In the accompanying drawings, Figure 1 is a vertical section of ahand-operated bell constructed in accordance with my invention; and Fig.2 is a sectional plan of the same on the line 2 2, Fig. 1. In theconstruction shown in the drawings, A is the body of the bell in theform of an inverted cup mounted upon a central standard or support B,which, as usual, has an enlarged or widened base B. The bell is securedon the top of the standard by a tubular screw (J, through whichpassesthe plunger D, having at the top the knob d to be acted on by theusers hand. The lower end of this plunger rests upon the shorthorizontal arm 6 of the cranked lever E, which is pivoted at f to theupper end of the standard B. The long arm 6' of this lever E carries thehammer or clapper F to strike the inner surface of the rim of the bell.

In conjunction with the described elements of a bell I provide aresonator within the bell itself and substantially concealed by it. Thisinner side of the rim of the bell at one side, preferably at a pointdiametrically opposite thalt at which the hammer F will strike the beproper proportion to give the full resonance effect, I prefer to availmyself of a portion of the standard B for the purpose by making thelower part of this standard hollow and making this, in effect, acontinuation of the tube R. The resonance air-chamber thus produced maybe made larger than is likely to be required,'so that then the properlength of air-column to give the best resonance effect for any givenbell can be experimentally obtained by introducing a filling r, ofparaffin or other suitable material, or by pressing inward thesheet-metal bottom of the hollow "standard or by diminishing orenlarging the size of the mouth of the tube B. To get the best effect inconjunction with the resonator, it is important that the hammer shallstrike the rim of the bell nearly at right angles thereto. For thispurpose I niake the pivoting-point f of the bell as far away from theplunger or center of the bell-cup as the curve of the cup will permit,and for the same purpose and at the same time to prevent the hammer fromhanging down below the bell to an unseemly extent I make the arm 6 ofthe lever of the cranked or bent form shown in Fig. 1.

It will be understood that my invention can be readily applied to othertypes of bells than that shown in the drawings and that theresonance-chamber may be variously constructed, provided it is inclosedwithin and practically concealed by the bell itself.

I claim as my invention 1. A bell provided with a resonance-chamberwithin the bell and practically concealed thereby, the open end of saidchamber facing theinner face of the rim of the bell at one side,substantially as described.

2. A bell provided with a clapper and an internal resonance-chamber withits open end facing the inner face of the rim at a point diametricallyopposite that at which the clapper strikes the bell.

3. A bell having a central supporting-standard, a clapper pivotedthereto, with an internal resonance-tube supported on said standard.

In order to get a column of air of the 4. A bell having a central hollowsupportwhich forms a continuation of the resonanceing-standard, aclapper pivoted thereto, with tube. an internalresonance-tube supportedon said In testimony whereoflhave signed my name hollow standard Whichforms a continuation to this specification in the presence of two subofsaid tube, as and for the purpose described. scribing Witnesses.

o. A bell having ahollow supportmg-stand- ROWLAND EL M AYL AND aid and apivoted clapper with a resonancetube having its open end facing theinner face Witnesses: of the rim of the bell at one side, the tubeMARTIN Knn'rson, IO opening into the interior of the standard, HUBERTHOWSON.

